/**
 * Copyright (c) 2016-2019 人人开源 All rights reserved.
 * <p>
 * https://www.renren.io
 * <p>
 * 版权所有，侵权必究！
 */

package com.atguigu.common.utils;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import org.apache.http.HttpStatus;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * 返回数据
 *
 * @author Mark sunlightcs@gmail.com
 */
public class R<T> extends HashMap<String, Object> {
    private static final long serialVersionUID = 1L;

    private T data;

    public Object getData() {
        return get("data");
    }

    public void setData(T data) {
        this.data = data;
    }

    public R() {
        put("code", 0);
        put("msg", "success");
    }

    public static R error() {
        return error(HttpStatus.SC_INTERNAL_SERVER_ERROR, "未知异常，请联系管理员");
    }

    public static R error(String msg) {
        return error(HttpStatus.SC_INTERNAL_SERVER_ERROR, msg);
    }

    public static R error(int code, String msg) {
        R r = new R();
        r.put("code", code);
        r.put("msg", msg);
        return r;
    }

    public static R ok(String msg) {
        R r = new R();
        r.put("msg", msg);
        return r;
    }

    public static R ok(Map<String, Object> map) {
        R r = new R();
        r.putAll(map);
        return r;
    }

    public static R ok() {
        return new R();
    }

    public R put(String key, Object value) {
        super.put(key, value);
        return this;
    }

    public Integer getCode() {
        return Integer.parseInt(String.valueOf(this.get("code")));
    }

    //转换pojo的
    public static <T> T toPoJo(Object data, Class<T> clazz) {
        JSONObject jsonObject = JSONObject.parseObject(JSON.toJSONString(data));
        return JSONObject.toJavaObject(jsonObject, clazz);
    }

    public <K> K getPojo(Class<K> clazz) {
        Object data = get("data"); // 假设这里获取到了某个对象
        if (data == null) {
            return null; // 处理 data 为 null 的情况
        }

        JSONObject jsonObject = JSONObject.parseObject(JSON.toJSONString(data));
        return (K)JSONObject.toJavaObject(jsonObject, clazz);
    }

    public static <T> List<T> toListPoJo(Object data, Class<T> clazz) {
        return JSON.parseArray(JSON.toJSONString(data), clazz);
    }
}
